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Algorithms (8)

1. N Queen Problem Using Recursive Backtracking

   11,998 views

     
2. Sudoku Solver using Recursive Backtracking

   8,497 views

     
3. Trapping Rain Water | Algorithm Problem

   2,709 views

     
4. Selection Sort | Algorithms

   2,705 views

     
5. Merge Sort | Sorting Algorithm

   2,219 views

     
6. Bubble Sort | Sorting Algorithm

   2,138 views

     
7. Fibonacci search

   2,094 views

     
8. Graph Search – Breadth First Search

   1,612 views

     
9. Binary Search

   1,401 views

     
10. Graph Search – Depth First Search

    940 views

      

Core Java (13)

1. Hashtable vs SynchronizedMap vs ConcurrentHashMap

   15,324 views

     
2. How is HashSet implemented internally in Java?

   6,868 views

     
3. CountDownLatch Vs CyclicBarrier | Java Concurrency Utilities

   6,518 views

     
4. How does HashMap work internally in Java?

   5,900 views

     
5. JVM Architecture Introduction | JVM Internals

   5,735 views

     
6. Java Method Overriding Interview Questions

   5,307 views

     
7. Producer Consumer Design Pattern using wait() and notify()

   5,290 views

     
8. What is the use of private constructor in java?

   5,285 views

     
9. How to create Immutable Class in Java

   4,398 views

     
10. Class Loader SubSystem | JVM Internals

    4,088 views

      
11. Types of Class Loader | Delegation Algorithm | JVM Internals

    4,027 views

      
12. String Pool | Java

    3,793 views

      
13. Wrapper Classes | Interview Questions

    3,413 views

      
14. Immutable class with mutable member fields in Java

    3,023 views

      
15. Private methods in Interface | Java 9

    2,986 views

      
16. Threadpool using Executor Framework | Java Concurrency Utilities

    2,975 views

      
17. Breaking Singleton using reflection and Enum Singleton

    2,914 views

      
18. interrupt(), interrupted() and isInterrupted() in Java Multithreading

    2,857 views

      
19. Java Method Overloading Interview Questions

    2,851 views

      
20. Preventing Cloning in Singleton Design Pattern

    2,725 views

      
21. Producer Consumer Design Pattern using BlockingQueue

    2,713 views

      
22. Singleton Design Pattern Using Double Checked Locking

    2,618 views

      
23. What is magic number CAFEBABE in java class file?

    2,567 views

      
24. Access Modifiers in Java

    2,398 views

      
25. CountDownLatch in Java Concurrency Utilities

    2,138 views

      
26. Find from where java class is loaded | Class Loader SubSystem

    1,998 views

      
27. CyclicBarrier | Java Concurrency Utilities

    1,996 views

      
28. Marker Interface Interview Questions

    1,708 views

      
29. InterruptedException in Java Multithreading

    1,647 views

      
30. Performance Issue with HashSet RemoveAll() method

    1,501 views

      
31. Serialization and Singleton Design Pattern

    1,345 views

      
32. final keyword in Java

    1,200 views

      
33. Defining and Starting a Thread | Thread VS Runnable

    1,193 views

      
34. Transient Keyword In Java

    1,172 views

      
35. Java8 Features

    1,157 views

      
36. Stream API | Java8

    978 views

      
37. java.util.stream – Stream APIs basics | Java8

    865 views

      
38. Default Method In Interface | Java8

    846 views

      
39. Java 9 Features

    832 views

      
40. What is optional and why it is there? | Java8

    755 views

      
41. Lambda Expression | Java8

    724 views

      
42. How is Java different than other programming languages?

    658 views

      
43. Functional Interface | Java8

    487 views

      
44. Java Variables Interview Questions

    336 views

      
45. JShell: The Java Shell and REPL | Java9

    283 views

      
46. Convenience Factory Methods for Collections | Java9

    250 views

      
47. Java 11 Features

    191 views

      
48. Java 10 Features

    150 views

      

Data Structure (6)

1. Heap (Min/Max Heap)

   6,486 views

     
2. Graph Search – Breadth First Search

   1,612 views

     
3. Stack Implementation Using Array

   1,608 views

     
4. Linked List

   1,054 views

     
5. Graph

   954 views

     
6. Graph Search – Depth First Search

   940 views

     
7. Tree Data Structure Terminologies – Set 1

   755 views

     
8. Types of Binary Tree | Binary Tree Introduction

   691 views

     
9. Array List

   566 views

     
10. Tree Data Structure Terminologies – Set 2

    463 views

      

Design Patterns (3)

1. Producer Consumer Design Pattern using wait() and notify()

   5,290 views

     
2. What is the use of private constructor in java?

   5,285 views

     
3. How to create Immutable Class in Java

   4,398 views

     
4. Singleton Design Pattern

   3,122 views

     
5. Breaking Singleton using reflection and Enum Singleton

   2,914 views

     
6. Preventing Cloning in Singleton Design Pattern

   2,725 views

     
7. Producer Consumer Design Pattern using BlockingQueue

   2,713 views

     
8. Design Patterns

   2,692 views

     
9. Singleton Design Pattern Using Double Checked Locking

   2,618 views

     
10. Builder Design Pattern

    1,984 views

      
11. Producer Consumer Design Pattern

    1,943 views

      
12. Mediator Design Pattern

    1,766 views

      
13. Object Pool Design Pattern

    1,598 views

      
14. Serialization and Singleton Design Pattern

    1,345 views

      
15. Observer Design Pattern

    1,336 views

      

Javascript (1)

1. Callbacks and Promises | Javascript

   997 views

     
2. Code Editors for Web Development

   354 views

     
3. Program to check if given string is palindrome or not

   306 views

     
4. Why should we learn JavaScript?

   299 views

     
5. ECMAScript, JavaScript Engines, ECMA-262 etc.

   217 views

     
6. Where to place JavaScript code?

   200 views

     
7. Statements, Semicolons and Comments in JavaScript

   96 views

     

Pumpkin Practice (1)

1. Snakes N Ladders | Java Program Implementation

   12,174 views

     
2. Tic Tac Toe | Java Program Implementation

   7,096 views

     
3. Program to find Unique Array Element

   6,092 views

     
4. Trapping Rain Water | Algorithm Problem

   2,709 views

     
5. Program to find nth digit of the series 3, 5, 6, 9, 10, 12, …

   1,708 views

     
6. Sudoku checker (By traversing each cell only once)

   1,220 views

     
7. Program to Check Whether a Number is Prime or Not

   900 views

     
8. Program to find number of set bits in the Binary number

   817 views

     
9. Program to check if a given number is power of two or not?

   669 views

     
10. Program to check if given string is palindrome or not

    306 views

      

Python (15)

1. Understand main function | Python

   134 views

     
2. Python Variables | Python

   126 views

     
3. Python & Pycharm installation

   105 views

     
4. Hello world in Pycharm

   94 views

     
5. Basic syntax in python

   62 views

     
6. if….else statement | Python Flow Control

   48 views

     
7. while loop | Python Flow Control

   44 views

     
8. Numbers in Python

   34 views

     
9. File I/O | Python

   34 views

     
10. for loop | Python Flow Control

    32 views

      
11. Lists in Python

    30 views

      
12. Exception Handling | Python

    29 views

      
13. Strings in Python

    28 views

      
14. Tuple In Python

    23 views

      
15. Dictionaries in Python

    22 views